ul {
    margin: 0;
    padding-left: 0;
    display: flex;
    flex-direction: row;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

ul li {
    display: flex;
    margin: 0 5px;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    white-space: nowrap;
}

a {
    text-decoration: none;
}

/*隐藏滚动条*/
::-webkit-scrollbar {
    display: none;
}

.active {
    color: red;
}

.indicator {
    background-color: brown;
    height: 2px;
    width: 2rem;
    margin-top: 2px;
}
